cvedb.io
CVE-2026-42248
CRITICAL · CVSS 9.8
EPSS exploitation probability: 0%
Published 2026-04-29T12:16:18.917 · Last modified 2026-06-17T10:47:34.423

Summary

Ollama for Windows does not perform integrity or authenticity verification of downloaded update executables. Unlike other platforms, the Windows implementation of the update verification routine unconditionally returns success so no digital signature or trust validation is performed before staging or executing update payloads, enabling attacker‑supplied executables to be accepted and later executed by the application. Critically, Ollama for Windows performs silent automatic updates, so the malicious payload may be installed automatically without user awareness. Maintainers of this project were notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Versions from 0.12.10 to 0.17.5 were tested and confirmed as vulnerable, o

Affected products

ollama — ollama

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.